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13 Dec 2019

An electron in the 2thenergy level of the H atomdrops to the 1stenergy level. In other words an excitedelectron drops to the ground state. What is the energy (in J) ofthe emitted photon)? The energy of an electron in the nth levelis



 En= - B
n2 		= - 2.18 x 10-18J
n2

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Nestor Rutherford
Nestor RutherfordLv2
17 Dec 2019

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